CN119056555A - A sample preparation and processing method suitable for different types of gold ores - Google Patents
A sample preparation and processing method suitable for different types of gold ores Download PDFInfo
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- CN119056555A CN119056555A CN202411400949.0A CN202411400949A CN119056555A CN 119056555 A CN119056555 A CN 119056555A CN 202411400949 A CN202411400949 A CN 202411400949A CN 119056555 A CN119056555 A CN 119056555A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
- B02C17/06—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with several compartments
- B02C17/07—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with several compartments in radial arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a sample preparation processing method suitable for gold ores of different types, which comprises the steps of crushing gold ores step by step in sequence in different modes, uniformly mixing crushed ore particles, dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight, adjusting the rotation inner diameter of a rod mill and setting the rod mill time according to the type of the ore to be processed, and uniformly mixing the positive sample after rod milling based on the setting of the rod mill inner diameter and the rod mill time to obtain an analysis sample. According to the invention, a rough machining mode is matched with a rod mill adjustable finish machining mode through multistage crushing, gold ore is subjected to multistage crushing to form ore particles, then is reduced to Cheng Zhengyang and a secondary sample, and the rotation inner diameter and time of normal sample rod mill machining are adjusted according to the type of the gold ore, so that the ore particles are rapidly machined into qualified analysis samples.
Description
Technical Field
The invention relates to the technical field of ore processing, in particular to a sample preparation processing method suitable for different types of gold ores.
Background
Gold has low abundance value in crust, uneven distribution and special physical and chemical properties, so that gold processing test is a complex work, along with the increasing of test instruments, the factors influencing the analysis result of gold samples are mainly concentrated on sample processing, the sample preparation is unqualified, and the analysis result is lost.
The gold ore contains coarse-grain gold, medium-grain gold and fine-grain gold, the embedded gold grains of different types of gold ores are different, and the gold ores of different types are crushed according to fixed parameters in the current sample preparation processing of the gold ores, but the gold ores of different types have different physical properties, and the crushed granularity specification of the gold ores of different types is different due to the different types of the gold grains. Therefore, when the crushing degree is insufficient, the sample preparation is failed to affect the analysis result, and when the crushing degree exceeds the requirement, the influence on the analysis result is small, but the working time is increased and the production cost is increased.
Therefore, the existing gold ore sample preparation processing is difficult to quickly produce qualified samples due to the difficulty in adjusting processing parameters according to different types of gold ores.
Disclosure of Invention
The invention aims to provide a sample preparation processing method suitable for different types of gold ores, so as to solve the technical problem that in the prior art, processing parameters are difficult to adjust according to different types of gold ores to rapidly produce qualified samples.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a sample preparation processing method suitable for different types of gold ores comprises the following steps:
Step 100, crushing gold ore in sequence step by step in different modes, uniformly mixing crushed ore particles, and dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight;
step 200, adjusting the rotation inner diameter of the rod mill and setting the time of the rod mill according to the ore type to be processed;
step 300, based on setting the rod mill inner diameter and the rod mill time, uniformly mixing the positive sample after rod milling to obtain an analysis sample.
As a preferred embodiment of the present invention, in step 100, the step-by-step crushing in different manners is sequentially classified into jaw crushing, twin-roll crushing and grinding disc crushing, and the diameter of the grinding disc crushed output particles is smaller than that of the twin-roll crushing output particles, and the diameter of the twin-roll crushing output particles is smaller than that of the jaw crushing output particles.
As a preferred scheme of the invention, in step 100, the specific steps of mixing, weighing and dividing the ore particles are as follows:
Collecting crushed ore particles, uniformly mixing the ore particles in a mixing machine, and weighing to obtain the total weight of the ore particles;
The ore particles are divided into a normal sample and at least one sub-sample of equal weight based on the total weight of the ore particles according to the desired weight requirements of the normal sample and the sub-sample.
As a preferred embodiment of the present invention, in step 200, the specific way to adjust the rotational inner diameter of the rod mill is:
confirming the rotation inner diameter of rod mill processing according to the type of the processed ore;
according to the rotation inner diameter of the rod mill processing, radially extracting a corresponding number of multistage grinding cylinders;
the extracted multi-stage grinding cylinder is fixed and closed so that the rod grinding area reaches the corresponding rotation inner diameter.
As a preferred embodiment of the present invention, the processing of the positive sample into the analysis sample is performed by a rod mill apparatus comprising:
An outer grinding cylinder, wherein one end of the outer grinding cylinder is provided with a feeding and discharging port cover;
The multistage inner grinding cylinder is coaxially and slidably arranged at the other end of the outer grinding cylinder, the multistage inner grinding cylinder comprises a plurality of sub-cylinders, the diameters of the sub-cylinders are gradually reduced, and the sub-cylinders are coaxially and slidably nested, so that the rotating inner diameter of the rod mill is changed by adjusting the number of the sub-cylinders in the outer grinding cylinder;
The blocking columns are coaxially and slidably arranged at the outer ends of the multistage inner grinding cylinders, cover discs are arranged at the blocked outer ends, and are connected with the outer ends of the plurality of sub-cylinders through rotary buckle structures so as to lock and unlock the cover discs and the single sub-cylinder through rotation;
The rod mill base is used for providing support for the outer mill cylinder, and a driver is arranged on the rod mill base so as to drive the outer mill cylinder to rotate according to a set rotating speed and a set time;
The outer grinding cylinder and the multistage inner grinding cylinder jointly form a rod grinding cavity with a variable diameter, and a plurality of metal rods are axially arranged in the rod grinding cavity.
As a preferable scheme of the invention, the inner wall of the outer grinding cylinder and the inner walls of the plurality of sub cylinders are respectively provided with a grinding layer, and the outer walls of the plurality of sub cylinders and the outer walls of the plugging columns are respectively provided with a fluff layer which is abutted against the grinding layer.
As a preferable scheme of the invention, the end part of the outer grinding cylinder far away from the material inlet and outlet cover is provided with an outer cylinder ring, the outer diameter of the outer cylinder ring is equal to the outer diameter of the outer grinding cylinder, and the inner diameter of the outer cylinder ring is smaller than the inner diameter of the outer grinding cylinder;
An inner cylinder ring is arranged at the outer end part of the sub-cylinder, and the outer diameter of the inner cylinder ring is equal to that of the sub-cylinder. The outer diameter of the sub-cylinder, the inner diameter of the inner cylinder ring is smaller than the inner diameter of the inner cylinder ring;
The outer cylinder ring and the inner cylinder ring are formed with gaps for accommodating the fluff layer between the sub-cylinder and the outer cylinder ring and between two adjacent sub-cylinders.
As a preferable scheme of the invention, the inner annular walls of the outer cylinder ring and the inner cylinder rings are respectively provided with clamping grooves distributed around the axes of the outer cylinder ring and the inner cylinder ring;
Clamping strips parallel to the axes of the clamping strips are arranged on the peripheral wall of the outer end part of the plugging column and the outer annular wall of each inner barrel ring, and each clamping strip is correspondingly and slidably clamped in each clamping groove so that the outer grinding barrel drives the multistage inner grinding barrel and the plugging barrel to synchronously rotate;
And the length of the outer grinding cylinder is equal to the length of each sub-cylinder and the length of the plugging cylinder, and each clamping strip extends to the other ends of the corresponding outer grinding cylinder, sub-cylinder and plugging column.
As a preferable scheme of the invention, the cover disc comprises a base disc, wherein the base disc is fixed at the outer end part of the plugging column, a plurality of control rings are rotatably arranged around the axis of the base disc outside the base disc, and the plurality of control rings are coaxially arranged and have diameters corresponding to the plurality of inner barrel rings one by one;
the inner end part of each control ring is provided with a plurality of bayonet locks distributed around the axis of the control ring, the outer end part of each inner cylinder ring is provided with a plurality of locking grooves distributed around the axis of the control ring, and each bayonet lock corresponds to each locking groove one by one;
The base plate is provided with a plurality of annular grooves for accommodating the control rings, a plurality of sliding ports distributed around the axis of the annular grooves are formed in the annular grooves, and the clamping pins penetrate through the sliding ports and can be inserted into the locking grooves.
As a preferable mode of the invention, a deflector rod is arranged at the outer end part of each control ring, and the deflector rods are staggered around the axis of the control ring.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, a rough machining mode is matched with a rod mill adjustable finish machining mode through multistage crushing, gold ore is subjected to multistage crushing to form ore particles, then is reduced to Cheng Zhengyang and a secondary sample, and the rotation inner diameter and time of normal sample rod mill machining are adjusted according to the type of the gold ore, so that the ore particles are rapidly machined into qualified analysis samples.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a schematic flow chart of a sample preparation processing method applicable to different types of gold ores according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a rod mill device suitable for sample preparation processing methods of different types of gold ores according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cover plate portion of a rod mill apparatus suitable for sample processing methods of different types of gold ores according to an embodiment of the present invention;
FIG. 4 is a schematic view of the inner barrel ring part of the rod mill device suitable for the sample preparation processing method of different types of gold ores according to the embodiment of the invention;
fig. 5 is a schematic view of a fluff layer part of a rod mill device suitable for the sample preparation processing method of different types of gold ores according to an embodiment of the present invention.
Reference numerals in the drawings are respectively as follows:
1-an outer grinding cylinder, 2-a multi-stage inner grinding cylinder, 3-a plugging column and 4-a rod grinding base;
11-a material inlet and outlet cover, 12-an outer cylinder ring, 21-a sub-cylinder, 22-a fluff layer, 23-an inner cylinder ring and 31-a cover plate;
231-clamping groove, 232-clamping strip, 233-locking groove, 311-base plate, 312-control ring, 313-clamping pin, 314-annular groove, 315-sliding opening and 316-deflector rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention provides a sample preparation processing method suitable for different types of gold ores, which comprises the following steps:
Step 100, crushing gold ore in sequence step by step in different modes, uniformly mixing crushed ore particles, and dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight;
step 200, adjusting the rotation inner diameter of the rod mill and setting the time of the rod mill according to the ore type to be processed;
step 300, based on setting the rod mill inner diameter and the rod mill time, uniformly mixing the positive sample after rod milling to obtain an analysis sample.
The sample preparation processing method of the embodiment mainly utilizes a mode of multiple crushing, and comprises the steps of crushing gold ore into ore particles step by step in sequence in different modes, uniformly mixing and dividing the ore particles into a normal sample and at least one auxiliary sample with the same weight, performing rod grinding and crushing on the normal sample, and adjusting the rotation inner diameter of the rod grinding and the rod grinding time according to the ore types before rod grinding and crushing, so that the effect of crushing the ore particles is improved, and analysis sample particles which meet the required specification and have uniform sizes are obtained.
Compared with the existing sample preparation processing method with fixed rod mill inner diameter, the gold ore Dan Yuanyang in the embodiment obtains the normal sample through a shrinkage method after being crushed for multiple times, and then adjusts the proper rod mill inner diameter and rod mill time according to the original type of the gold ore, so that the normal sample is rod-milled according to the set rod mill inner diameter and rod mill time, and the specification of the produced analysis sample meets the requirements.
And as the inner diameter of the rod mill can be adjusted, different inner diameters of the rod mill can be adjusted according to different gold ore origins so as to better crush the gold ore origins.
And the precondition of adjusting the rod mill processing according to the type of the ore to be processed is that the granularity of the processing required by sample preparation analysis of various types of gold ores is determined according to the different types of gold ores. The rotating inner diameter of the rod mill is also designed according to test analysis, so that machining in different rod mill devices is not needed.
In step 100, the step-by-step crushing in different manners is sequentially divided into jaw crushing, twin-roll crushing and millstone crushing, wherein the diameter of the produced particles crushed by the millstone is smaller than that of the produced particles crushed by the twin-roll, and the diameter of the produced particles crushed by the twin-roll is smaller than that of the produced particles crushed by the jaw.
Jaw crushing, twin-roll crushing and millstone crushing are mainly used for crushing gold ore into smaller ore particles step by step, in the process, a jaw crusher, a twin-roll crusher and a millstone crusher are respectively adopted, and the jaw crusher, the twin-roll crusher and the millstone crusher can be used for adjusting the specifications of crushing products, namely, the diameter of the produced particles crushed by the millstone is smaller than the diameter of the produced particles crushed by the twin-roll crusher. Based on the method, gold ore can be finely crushed step by step into ore particles with uniform size.
In step 100, the specific steps of mixing, weighing and dividing ore particles are as follows:
Collecting crushed ore particles, uniformly mixing the ore particles in a mixing machine, and weighing to obtain the total weight of the ore particles;
The ore particles are divided into a normal sample and at least one sub-sample of equal weight based on the total weight of the ore particles according to the desired weight requirements of the normal sample and the sub-sample.
In the process, the ore particles are uniformly mixed to ensure that all parts (gold particles and stone particles) are uniformly distributed, so that the components of all samples can be ensured to be similar in composition in the dividing process, and the research and analysis are convenient.
The division is a common method for reducing samples, namely weighing ore particles, and calculating the number of parts of the ore particles according to the component range of the required analysis sample, so as to divide the uniformly mixed ore particles into a normal sample and at least one auxiliary sample for processing research.
In the further processing of the sample, it is necessary to refine the crushed ore particles again, in particular as follows:
In step 200, the specific way to adjust the rotation inner diameter of the rod mill is:
confirming the rotation inner diameter of rod mill processing according to the type of the processed ore;
according to the rotation inner diameter of the rod mill processing, radially extracting a corresponding number of multistage grinding cylinders;
the extracted multi-stage grinding cylinder is fixed and closed so that the rod grinding area reaches the corresponding rotation inner diameter.
Since different gold ores have different physical properties (such as abrasion resistance, brittleness, etc.), when the ore particles are further rod-milled to obtain finer particles, it is necessary to adjust the rotation inner diameter and time of rod-milling processing for the kind of gold ores as they are, thereby obtaining analysis-like particles that meet the specifications.
Specifically, the rotation inner diameter of the rod mill is changed by adjusting the using number of the multi-stage grinding cylinders, so that ore particles are rod-milled in a rod-milling space with a proper inner diameter.
Based on the above method, as shown in the figure, the processing of the positive sample into the analysis sample is realized by a rod mill device, which comprises:
the outer grinding cylinder 1, one end of the outer grinding cylinder 1 is provided with a feed and discharge port cover 11;
The multistage inner grinding cylinder 2 is coaxially and slidably arranged at the other end of the outer grinding cylinder 1, the multistage inner grinding cylinder 2 comprises a plurality of sub-cylinders 21, the diameters of the plurality of sub-cylinders 21 are gradually reduced, and the plurality of sub-cylinders 21 are coaxially and slidably nested, so that the rotating inner diameter of the rod mill is changed by adjusting the number of the sub-cylinders 21 in the outer grinding cylinder 1;
The plugging column 3 is coaxially and slidably arranged at the outer end part of the multistage inner grinding cylinder 2, the outer end part of the plugging column 3 is provided with a cover disc 31, and the cover disc 31 is connected with the outer end parts of the plurality of sub cylinders 21 through a rotary buckle structure so as to lock and unlock the cover disc 31 and the single sub cylinder 21 through rotation;
the rod mill comprises a rod mill base 4, wherein the rod mill base 4 is used for providing support for the outer mill cylinder 1, and a driver is arranged on the rod mill base 4 so as to drive the outer mill cylinder 1 to rotate according to a set rotating speed and a set time;
wherein, the outer grinding cylinder 1 and the multi-stage inner grinding cylinder 2 jointly form a rod grinding cavity with variable diameter, and a plurality of metal rods are axially arranged in the rod grinding cavity.
The rod mill device in this embodiment mainly adopts the mode of pull adjustment, and multistage interior grinding section of thick bamboo 2 slidable mounting is in the one end of outer grinding section of thick bamboo 1, and the sealed multistage interior grinding section of thick bamboo 2 of plug post 3 slip insertion to when the internal diameter in needs adjustment rod mill chamber, draw out through the sub-section of thick bamboo 21 of a certain number of lid 31 joint, make the interior reservation of outer grinding section of thick bamboo 1 required number of sub-section of thick bamboo 21, and the thickness of every sub-section of thick bamboo 21 is always, thereby according to the quantity that keeps sub-section of thick bamboo 21, reaches the purpose of adjustment rod mill chamber internal diameter, in order to adapt to the meticulous crushing processing of granule of different gold ores.
Since the axis sliding adjustment is adopted between the outer grinding cylinder 1 and the multi-stage inner grinding cylinder 2, the following preferred embodiments are provided in order to avoid frictional damage between the outer grinding cylinder 1 and the multi-stage inner grinding cylinder 2 and between the sub-cylinders 21 and 21.
As shown in fig. 2 and 5, the inner wall of the outer grinding cylinder 1 and the inner walls of the plurality of sub cylinders 21 are provided with grinding layers, and the outer walls of the plurality of sub cylinders 21 and the outer walls of the plugging columns 3 are provided with fluff layers 22 which are abutted against the grinding layers;
the end part of the outer grinding cylinder 1, which is far away from the material inlet and outlet cover 11, is provided with an outer cylinder ring 12, the outer diameter of the outer cylinder ring 12 is equal to the outer diameter of the outer grinding cylinder 1, and the inner diameter of the outer cylinder ring 12 is smaller than the inner diameter of the outer grinding cylinder 1;
the outer end of the sub-cylinder 21 is provided with an inner cylinder ring 23, the outer diameter of the inner barrel ring 23 is equal. The outer diameter of the sub-cylinder 21, the inner diameter of the inner cylinder ring 23 is smaller than the inner diameter of the inner cylinder ring 23;
the outer and inner cylindrical rings 12 and 23 are formed with gaps for accommodating the pile layer 22 between the sub-cylinders 21 and the outer cylindrical ring 12 and between adjacent two sub-cylinders 21.
Specifically, the inner walls of the outer grinding cylinder 1 and the sub-cylinder 21 are each provided with a grinding layer to provide friction to throw up the mineral particles and metal rods as they are. And the fluff layer 22 is arranged on the outer walls of the sub-cylinder 21 and the plugging column 3, the sub-cylinder 21 and the plugging column 3 are contacted with the grinding layer by the fluff layer 22 when sliding, so that abrasion is effectively reduced, and ore particles can be blocked from entering a gap between the sub-cylinder 21 and the outer grinding cylinder 1, a gap between the plugging column 3 and the sub-cylinder 21 and a gap between the sub-cylinder 21 and the sub-cylinder 21.
Since the outer grinding cylinder 1 is rotated by the driver on the rod mill base 4, in order to rotate the sub-cylinder 21 in synchronization with the outer grinding cylinder 1, rod milling is also completed when a plurality of sub-cylinders 21 are used, and the following preferred embodiments are provided.
As shown in fig. 4, the inner annular walls of the outer cylinder ring 12 and each inner cylinder ring 23 are provided with clamping grooves 231 distributed around the axes thereof;
Clamping strips 232 parallel to the axes of the clamping strips 232 are arranged on the peripheral wall of the outer end part of the plugging column 3 and the outer annular wall of each inner barrel ring 23, and each clamping strip 232 is correspondingly and slidably clamped in each clamping groove 231 so that the outer grinding cylinder 1 drives the multistage inner grinding cylinder 2 and the plugging 3 to synchronously rotate;
And the length of the outer grinding cylinder 1 is equal to the length of each sub-cylinder 21 and equal to the length of the plugging column 3, and each clip 232 extends to the other end of the corresponding outer grinding cylinder 1, sub-cylinder 21 and plugging column 3.
Specifically, the clamping grooves 231 are formed in the inner annular wall of the outer barrel ring 12 and each inner barrel ring 23, and are matched with the clamping strips 232 formed in the outer walls of the inner barrel rings 23 and the plugging columns 3, so that the sub-barrels 21 are clamped with the outer grinding barrels 1, the plugging columns 3 are clamped with the sub-barrels 21, the adjacent sub-barrels 21 are clamped, and accordingly the outer grinding barrels 1 can rotate to enable the sub-barrels 21 and the plugging columns 3 to synchronously rotate.
In order to ensure that the sub-cylinder 21 and the plugging column 31 can be moved to the set positions within the adjustment range and can be kept in the clamped state, each clamping strip 232 is extended to the other ends of the corresponding outer grinding cylinder 1, sub-cylinder 21 and plugging column 3, so that the clamping strips 232 are always clamped with the clamping grooves 231.
It should be added that the cover disc 31 is supported by a support member that can slide horizontally on the rod mill base 4, and the support member can be locked at any position, so that the limit of the cover disc 31 and the limit of the adjustment of the sub-cartridge 21 are realized.
The multi-stage inner grinding cylinders 2 are sleeved between the sub cylinders 21, and the cover disc 31 can be independently clamped with the sub cylinders 21, so that the number of the sub cylinders 21 can be freely selected and adjusted, and the purpose of adjusting the inner diameter of the rod grinding cavity is achieved. The method comprises the following steps:
As shown in fig. 2,3 and 4, the cover disc 31 comprises a base disc 311, the base disc 311 is fixed at the outer end part of the plugging column 3, a plurality of control rings 312 are rotatably arranged around the axis of the base disc 311, and the plurality of control rings 312 are coaxially arranged and have diameters corresponding to the plurality of inner cylinder rings 23 one by one;
The inner end part of each control ring 312 is provided with a plurality of bayonet locks 313 distributed around the axis thereof, the outer end part of each inner cylinder ring 23 is provided with a plurality of locking grooves 233 distributed around the axis thereof, and each bayonet lock 313 corresponds to each locking groove 233 one by one;
A plurality of annular grooves 314 for accommodating the control rings 312 are arranged on the base plate 311, a plurality of sliding ports 315 distributed around the axis of the annular grooves 314 are arranged in the annular grooves 314, and the clamping pins 313 pass through the sliding ports 315 and can be inserted into the locking grooves 233;
A shift lever 316 is provided at the outer end of each control ring 312, and each shift lever 316 is staggered around the axis of the control ring 312.
After the plugging column 3 completely enters the sub-cylinder 21, the cover disc 31 is abutted against the inner cylinder ring 23, and the bayonet lock 313 is inserted into the locking groove 233, so that when a certain number of sub-cylinders 21 need to be moved, the corresponding control rings 312 are rotated, the bayonet lock 313 slides in the locking groove 233 along the sliding port 315 so as to slide into a narrower space, the axial movement of the bayonet lock 313 is limited, and when the cover disc 31 moves axially, the corresponding inner cylinder ring 23 and the corresponding sub-cylinder 21 can be driven to move along the synchronous axis, and the inner diameter of the rod grinding cavity is adjusted.
The shift levers 316 are used for operating the control ring 312 to lock and unlock, and the staggered arrangement of the plurality of shift levers 316 can facilitate operation without interference.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411400949.0A CN119056555A (en) | 2024-10-09 | 2024-10-09 | A sample preparation and processing method suitable for different types of gold ores |
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| CN202411400949.0A CN119056555A (en) | 2024-10-09 | 2024-10-09 | A sample preparation and processing method suitable for different types of gold ores |
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